Homelab

Disclaimer: I live in Europe, so my house's walls are made of bricks and mortar, no plasterboard to easily cut / patch up.

I have a room that is generally cooler than the rest of my home and it's also far away from my bedroom, so I setup my home lab there. Until now, I managed with WiFi, but I switched operators due to soaring prices and I got screwed since the download / upload speed on this one is kinda shitty. Hence, I want to pass LAN cables from my home lab to my home office, which would mean going through two rooms or, correspondingly, two doors. Since it's my property, I thought of cutting a couple of centimeters from the door frame and then lead the cables through a skirting board and then through the space cut up from the door frame. What do you think? Any other idea?